(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "Metallurgy Of Cast Iron"

560
METALLURGY   OF   CAST   IRON.
are required to show exceptional service under high temperatures or severe sudden heating and cooling, causing alternate expansion and contraction strains in castings. The fluidity strips ran up full, as shown in Fig. 131, Pag"e 54*• ^ne contraction ranged from .17 for the *^-inch bars to .03 in the 4-inch bars. The chilling qualities of the iron is shown in the test piece, Fig. 145, page 559. The chemical analyses of Cast A, and all others to Cast L, are shown in Table 127, page 570. This first cast A was made under the supervision of the author
•TABLE  B-Il6.----TESTS  OF  DYNAMO   IRON   CAST   AT   WESTINGHOUSE
ELECTRIC   AND   MANUFACTURING   CO.,   I'lTTSBURd,  PA.
							' Tensile tests of nnfin-		
ished green sand bars.                 green sand bars.*							green sand bars.		
O *J	|ti	J3JC II	S -• I  *s •	i	*<*	u .	t4-<	i	Ui 5 « V-4     O
			^3 \    o£.	I-J3	._?r_ 230 6,120 11,065	.306 7.100 .115 .080	'  |S	•P	
""24 25 26 .	~Ti7	2IO 2,300	.106         31 .125     :;               32				39	1.12 1.70	""is'sto"
	1.74	7,070	.079 ii        33	2.15			40 41 *Fiii		29,140
	2.26	15,780	.086 i i        34					2.27	46,58..) T>ars.
27 28	2.86	31,470	.101  ji        35	2.82	24, 1 80	•095 .073		ished 1.13	
	3-47	4S,20O	• 095  i!       36		41,485		43		"Ts'^o"
29	4.01	73,550	•093 !         37	_>95	AS, 1 50	.065			
30	4.62	IOO, I2O	.061    1				44		
*For references to meaning of the star in Tables 1 16, 125, see paragraph following Table 115, page 558.							1 17, 120, 121, 122, 123 and		
Compression tests of Table 116 from bars cast in dry sand showed a ^3-inch cube cut from a rough J^-inch square bar to stand 38,360 pounds, and a j^-inch cube taken from the center of a i-inch square bar 23,000 pounds; from the center of a 2-inch square bar, 18,130 pounds; 3-inch square, 13,790; and 4-inch square, 12,430 pounds.he bars cast in dry sand and j^reen sand  showedast on end, us such will tfive truer results than the [J4™inch round bar in general practice, especially in making comparison <>i; the widest ranges in grades.temper '' or damp-              ,| |